Implement WebPrescientNetworking to trigger preconnect from Blink

chrome/renderer/prerender/prerender_dispatcher.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/prerender/prerender_dispatcher.h"
 
 #include "base/logging.h"
 #include "chrome/common/prerender_messages.h"
+#include "chrome/common/render_messages.h"
 #include "chrome/renderer/prerender/prerender_extra_data.h"
 #include "content/public/common/referrer.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view.h"
 #include "googleurl/src/gurl.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebPrerenderingSupport.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebString.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebURL.h"
 
 namespace prerender {
@@ skipping 80 matching lines @@
     IPC_MESSAGE_HANDLER(PrerenderMsg_OnPrerenderStopLoading,
                         OnPrerenderStopLoading)
     IPC_MESSAGE_HANDLER(PrerenderMsg_OnPrerenderAddAlias, OnPrerenderAddAlias)
     IPC_MESSAGE_HANDLER(PrerenderMsg_OnPrerenderStop, OnPrerenderStop)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
+void PrerenderDispatcher::preconnect(
+    const WebKit::WebURL& url,
+    WebKit::WebPreconnectMotivation motivation) {
+  content::RenderThread::Get()->Send(new ChromeViewHostMsg_Preconnect(
+      url, motivation
+      ));

[gavinp, 2013/05/09 14:49:16]

These should move up to the previous line.

[kouhei (in TOK), 2013/05/10 01:59:09]

Done.

+}
+
 void PrerenderDispatcher::add(const WebPrerender& prerender) {
   const PrerenderExtraData& extra_data =
       PrerenderExtraData::FromPrerender(prerender);
   if (prerenders_.count(extra_data.prerender_id()) != 0) {
     // TODO(gavinp): Determine why these apparently duplicate adds occur.
     return;
   }
 
   prerenders_[extra_data.prerender_id()] = prerender;
 
@@ skipping 12 matching lines @@
 }
 
 void PrerenderDispatcher::abandon(const WebPrerender& prerender) {
   const PrerenderExtraData& extra_data =
       PrerenderExtraData::FromPrerender(prerender);
   content::RenderThread::Get()->Send(
       new PrerenderHostMsg_AbandonLinkRelPrerender(extra_data.prerender_id()));
 }
 
 }  // namespace prerender